Improving Robustness of Biometric Identity Determination with Digital Watermarking

Table 2

The mean bit error rate of the final template and the mean peak signal-to-noise ratio [dB] of the watermarked image for different JPEG quality levels.

	JPEG 100		JPEG 90		JPEG 80
	BER	PSNR	BER	PSNR	BER	PSNR
Orig (40%)	0.08	45.6	0.06	45.6	0.06	45.6
Sepia (40%)	0.16	45.6	0.13	45.6	0.19	45.6
FR (40%)	0.10	45.6	0.11	45.6	0.26	45.0
Orig (50%)	0.06	43.5	0.07	43.5	0.07	43.5
Sepia (50%)	0.13	43.5	0.12	43.5	0.12	43.5
FR (50%)	0.06	43.4	0.10	43.4	0.11	43.4
Orig (60%)	0.08	42.2	0.07	42.2	0.07	42.2
Sepia (60%)	0.17	42.2	0.11	42.2	0.11	42.2
FR (60%)	0.06	42.0	0.08	42.0	0.11	42.0